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To achieve high reliability in on-chip networks, frequent runs of Built-in Self-Test allow the detection of and recovery from faults before they affect packets and the system functionality. However, to test routers, wrappers isolate cores from the network which leads to execution blocking and performance loss. In this paper, we propose a design-for-test reconfigurable router with two alternative bypassing...
A low-latency and reliable message switching network is critical for constructing high-speed datacenter networks. In this paper, we present the design, implementation, and evaluation of a novel Location basEd Source Switching (LESS) for datacenter networks. LESS enables lightweight source switching through a location-based addressing scheme. Each switch and host can independently derive a source route...
Conventional fault-tolerance approaches for Networks-on-Chip (NoCs) cannot be applied to high assurance real-time systems due to their different goals and constraints. These systems impose strict integrity, resilience and real-time requirements. All possible effects of hardware errors must be taken into account and the resulting system must be predictable, even in the presence of errors. In this paper,...
SpaceWire is a full-duplex, point-to-point, high-speed serial data transfer standard which is intended for use in further on-board spacecraft, space missions and applications. However, space environment is harsh and complex which requires a communication network with high reliability. It is inevitable that SpaceWire network link fault or SpaceWire equipment damage is able to change the SpaceWire network...
This paper proposes KAR (Key-for-Any-Route), a new intra-domain resilient routing system in which edge-nodes set a route ID to select any existing route as an alternative to safely forward packets to their destination. In KAR routing system, a route is defined as the remainder of the division between a route ID and a set of switch IDs along the path(s) between a pair of nodes. KAR-enabled switches...
Datacenter networks (particularly, in clouds) nowadays support varieties of services from customers, and a novel paradigm, Software Defined Networking (SDN), is proposed to offer flexible application-aware management of these networks. However, as networks keep scaling up, many difficulties arise. Unlike prior studies on the data plane in SDN, this paper investigates the increasing complexity from...
To protect SDN-enabled networks under large-scale, unexpected link failures, we propose ResilientFlow that deploys distributed modules called Control Channel Maintenance Module (CCMM) for every switch and controllers. The CCMMs makes switches able to maintain their own control channels, which are core and fundamental part of SDN. In this paper, we design, implement, and evaluate the ResilientFlow.
This paper proposes an optimize dependable router suitable for accurate online error detections in adaptive or dynamic Networks on Chip (NoC). The proposed router detects and localizes data packet errors in the networks based on adaptive routing algorithm. The main originality of the proposed router is its capability to distinguish temporary and permanently errors through specific error detection...
Low power consumption and reliability become vital in Network-on-Chip (NoC) designs with growth of integrated circuits complexity. In this paper, we propose a novel architecture with buffer-shared router structure to reduce buffer redundancy. Accordingly, the proposed defect-tolerant routing algorithm can effectively associate with improved intra-router architecture to improve reliability of NoCs...
Optical networks have been considered for on-chip communications due to its advantages on bandwidth density, power efficiency and propagation speed over the electrical counterpart. However, the major optical device-micro ring resonator is very sensitive to manufacturing errors and temperature fluctuations, which results in the bandwidth loss or even the failure of optical link. Thus, this paper proposes...
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